Sash-fastener and burglar-alarm



I; BROOKE.

v SASH FASTENER AND BURGLAR ALARM. No. 251,026. Patented Dec. 20,1881.

(NO Model.)

WITNESSES: v yNToRt 2/6 BY N. PEYERS, Fhola-Lllhngnphcr. Waslllngloll, I10,

' ATTORNEY.

. and alarm embodying my invention.

UNITED STATES PATENT OEErcE.

ISAAC BROOKE, OF ROYERS FORD, PENNSYLVANIA.

SASH-FASTENER AND BURGLAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 251,026, dated December 20, 1881.

Application filed July 19, 1881.

To all whom it may concern Be it known that I, ISAAC BROOKE, a citizen of the United States, residing at Royers Ford, in the county of Montgomery, State of Pennsylvania, have invented a new and useful Improvement in Door, Shutter, and Sash Fast eners and Alarms, which improvement is fully set forth in the following specification audaccompanying drawings, in which- Figurel is a top or plan View of the fastener Fig. 2 is a longitudinal vertical sectiotrthereot' on line mm, Fig. 1. Fig. 3 is a transverse vertical section thereof.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to combined sash-fasteners and burglar-alarms; and it consists in the construction and combination of parts hereinafter set forth.

Referring to the drawings, A represents a box or casing, which is adapted to be firmly secured to the meeting-rail of the lower sash of a window, a door, shutter, 850.; but I will hereinafter dt scribe the invention as applied to the sash. t

13 represents the pivoted leveror arm of a sash-fastener whose face-plate is connected to the meeting-rail of the upper sash, said arm having one end bent or raised, as at a.

To the casing A are pivoted a hammer, O, and a dog, D, and one end of the casingis formed with a bed or nipple, E, for holding a cartridge-cap, which is to be struck by the hammer O, the motion of the latter being shown by the dotted lines, Fig.2. The dogDhasits axis parallel with the axis of the hammer O, and is so disposed that when the hammer is thrown back its outer end may be engaged by the nose of the dog. The dog has fortned with it, on its under side, a hotizontally-extendiug wing, D, which, when the parts are in operative position, is overhung by the arm B of the sash-fastener and a bearing, D, for one end of a spring, F, whose other end is connected to or in contact with the hammer G, the object (No model.)

of the spring being to forcibly discharge the hammer.

The alarm is set by throwing back the hammer O and engaging the dog D with it. The

.arm B of the sash-fastening is then turned or dow, either by raising the lower sash or lower-.

ing the upper sash, the pressure of the arm B of the fastener on the wing of the dog forces down said wing and throws the nose of the dog from the end of the hammer, whereby the latter, being free, is sprung and forcibly strikes the cap or cartridge, the discharge whereof is an alarm. Should furtlter attempts be tnade to lower or raise the sashes, the lever B, bearing against the casing A, resists the efl'orr, similar to sash-fasteners in use.

When the window is to be opened the arm B may be turned clear of the casing A, the springing of the hammer being restrained by hand.

Having thus described my invention, what I claim as new, and d site to secure by Letters Patent, is

The pivoted dog D, provided with wing I) ISAAC BROOKE.

Witnesses:

JOHN A. WIEDERSHEIM, F. COOPER. 

